Barrens Hut is a boat-accessible site located 300 metres off the coast of Cronulla, Australia. The topography features a combination of reef, wall, and drop-off terrain with depths ranging from 12 to 28 metres. Divers should be prepared for moderate currents that can accelerate along the wall, requiring careful navigation. Visibility typically ranges between 15 and 35 metres. Due to the depth and current conditions, this site is suited for advanced divers. Species recorded around this area include Weedy Seadragons, Spotted Wobbegongs, Pygmy Pipehorses, Red-fingered Anglerfish, Green Sea Turtles, Giant Cuttlefish, Pot-bellied Seahorses, Coffin Rays, Port Jackson sharks, and various nudibranchs.

The 4th-5th Reefs off Cronulla consist of temperate reef structures at depths of 15 to 17 metres. This site is suitable for intermediate divers and offers both shore and boat entry options. Visibility typically ranges between 5 and 10 metres. Divers should be aware of boat traffic in the area and are advised to deploy a surface marker buoy before ascending. Facilities at the site include parking and toilets. The water temperature fluctuates between 18C and 24C, with the warmest conditions occurring from summer through early autumn.

Oak Park in Cronulla is a shore dive featuring a combination of reef and wall topography. Divers typically explore depths between 8 and 12 metres, with an average of 10 metres. The site is suitable for beginners, offering a generally mild current and visibility ranging from 3 to 15 metres. The reef structure is characterised by sponge gardens. Marine life frequently encountered includes Eastern Blue Groper and various wrasses. Divers may also spot Eagle Rays, Common Sydney Octopus, Spotted Wobbegong, Giant Cuttlefish, and Port Jackson sharks, particularly between July and September. Hazards include boat traffic, surf, and sea urchins, which require careful entry. Facilities at the site include parking, toilets, and showers.

Bass and Flinders Point in Cronulla is a shallow drift dive and snorkel site featuring a rocky reef and wall topography. Divers and snorkellers typically experience depths between 3 and 8 metres. The site is accessed from the shore, with a moderate current on an outgoing tide carrying visitors toward Oak Park. Visibility generally ranges from 5 to 10 metres. The area is subject to surge, particularly with north-easterly swells exceeding 1.4 metres. Divers should remain vigilant regarding boat traffic and potential entanglement from discarded fishing lines. Facilities at the site include parking, toilets, showers, and changing rooms.

Windy Point in Cronulla is a versatile shore dive featuring a reef, wall, and cave system. With depths ranging from 3 to 12 metres and an average of 6 metres, it is suitable for beginners. Divers frequently encounter Eastern Blue Groper, Spotted Wobbegong, and various rays including Eagle, Smooth, and Fiddler rays. Port Jackson sharks are common, particularly during their winter breeding season. Other sightings include Giant Cuttlefish, Green Sea Turtles, and Green Moray. Visibility typically spans 5 to 10 metres. Entry and exit require caution due to potential surf and boat traffic, especially during north-easterly winds. Parking is available for site access.

Shark Island in Cronulla offers a diverse underwater landscape featuring a reef, wall, and drop-off. Depths range from 5 to 27 metres, with an average of 10 metres. Divers frequently encounter spotted wobbegongs, Port Jackson sharks, and eastern blue gropers, alongside fiddler rays, eagle rays, and common Sydney octopus. The site is suitable for intermediate divers, though conditions vary significantly with visibility ranging from 3 to 40 metres. Currents are variable, and divers must manage surge near the wall. Boat access is required, and the area experiences active boat traffic, necessitating the use of a surface marker buoy during ascents and safety stops.

Wanderers is a deep reef and drop-off site located 5000 metres offshore from Boat Harbour. The topography features a wall with depths ranging from 34 to 46 metres, averaging 37 metres. This site is suited for advanced divers due to the depth, potential for decompression, and moderate currents. Visibility is highly variable, fluctuating between 5 and 30 metres. Divers should plan for a typical dive duration of 40 minutes and carry a surface marker buoy. Given the deep nature of the site and changing conditions, conservative gas management and close buddy contact are essential. Boat access is required to reach this location.

Marley Point in the Royal National Park is an advanced reef and cave dive site located 5500 metres offshore. The topography features complex cave systems and sponge gardens, with depths ranging from 5 to 35 metres and an average of 18 metres. Divers must manage moderate currents and surge, which can push against cave walls. Visibility varies significantly between 5 and 25 metres. Due to the surge and current, this site is strictly for experienced divers. Boat entry is required, and timing dives around slack water is recommended to mitigate current impact. Always monitor conditions closely, as offshore winds can bring colder deep water to the surface.